main differences between hudson marks ?

[brewerjerry]

Hi

    I have been searching on the net as I have no Hudson books and can't find the answer

 

  So can anyone tell me ? 

 

   What is the main differences between the mark I onwards thro to and including the mark VI

 

  Just engines and cowlings ? 

      cheers

        Jerry

[dogsbody]

There was a change of engines, from Wright R-1820 to P&W R-1830 somewhere along the way.

 

https://en.wikipedia.org/wiki/Lockheed_Hudson

 

 

 

 

Chris

[Geoffrey Sinclair]

Mark I production order, 200 RAF, then 50+50 RAAF then 50 RAF.  Plus 1 extra for the RAF.

 

RAF
Hudson I, original version, Wright Cyclone R-1820 G 102A engines, 2 position propellers
Hudson II, constant speed propellers
Hudson III, Wright Cyclone R-1820 G 205A engines. (aircraft 152 onwards, RAF serial V9066 onwards, had greater fuel capacity)
Hudson IIIA, (USAAF A-29, lend lease)
Hudson IV (or IVA) Pratt and Whitney Twin Wasp R-1830 S3CG, RAAF order taken over in the second half of 1940. (RAAF mark I or II)
Hudson V Pratt and Whitney Twin Wasp S3C4G, non lend lease order
Hudson VI Pratt and Whitney Twin Wasp (USAAF A-28, lend lease)

 

RAAF
Hudson I, original version, Pratt and Whitney Twin Wasp engines R-1830 S3CG, 2 position propellers (RAF mark IV/IVA)
Hudson II, constant speed propellers
(Some references suggest all were called mark II, others mark I, by the RAAF, the above follows Stuart Wilson's listing.)

 

USAAF
A-28 Pratt and Whitney R-1830-45 engines
A-28A interior convertible for troop carrying
A-29 Wright Cyclone R-1820-87 engines
A-29A interior convertible for troop carrying
AT-18 gunnery trainer version of A-29, Martin dorsal turret.
AT-18A no dorsal turret, navigation trainer.

 

USN
PBO (USAAF A-29)

 

US Production reports
Mark I/B-14 production ended in March 1940,
Mark I/model 214 production March to August 1940
Mark II/model 414 production August/September 1940
Mark III/model 414 production September 1940 to February 1941, June to September 1941.
Mark V/model 414 production February to July 1941.
A-28/Mark IVA in September 1941
A-28A/Mark VI production May to December 1942
A-29/Mark IIIA production September 1941 to January 1942
A-29A/Mark IIIA production January to May 1942, April and May 1943.

AT-18A production December 1942 to February 1943

AT-18 production February to April 1943.
PBO production September 1941

 

USAAF version notes
A-28/Hudson IV, same as Lockheed Hudson 414-08 with R-1830-45 engines.  US versions used open cockpit with 1 0.50 cal gun in place of Boulton Paul Turret.  De icer boots, fowler flaps.
A-28A Same as A-28 with change to R-1830-67 engines and fuel increase, some modified from A-29 by engine change.
A-29A, B, Hudson III.  Originally designated C-63, reclassified as Attack because equipment identical to A-28 except engines.  Powered by R-1820-87 engines, A-29A fitted as troop transports, A-29B equipped for aerial mapping.

A-29B can be reconverted to bombardment type.  Photo equipment, 3 cameras installed in trimetrogon mount in bombardier's compartment and one K-17 camera in rear of cabin centered over forward portion of gun tunnel.

[brewerjerry]

Hi

    Many thanks for your extremely detailed reply

   great info 

     cheers

        jerry